将所有输入转发到 Java 进程

Question

我正在尝试将输入转发给流程。这是一个 Minecraft 服务器，所以我需要向它发送命令。我以这种方式尝试，但它没有发送任何东西。（我也检查了日志文件）

public static void main(String[] args) throws IOException {
    File file = new File("spigot.jar");
    if(file.exists()) {
        ProcessBuilder builder = new ProcessBuilder("java", "-jar", "spigot.jar");
        Process p = builder.start();

        new Thread(() -> {
            BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
            String s = "";
            try {
                while((s = br.readLine()) != null) {
                    System.out.println(s);
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }).start();

        new Thread(()-> {
            BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(p.getOutputStream()));
            BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
            String cmd = "";
            try {
                while((cmd = input.readLine()) != null) {
                    bw.write(cmd);
                    bw.flush();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }).start();

        new Thread(() -> {
            while(true) {
                if(!p.isAlive()) {
                    System.out.println("Server closed.");
                    System.exit(0);
                }
            }
        }).start();


    } else {
        System.out.println("spigot.jar not found.");
        System.exit(0);
    }
}

编辑：我使用线程重写了代码，但我遇到了同样的问题

Answer 1

已解决。

我需要添加"bw.newline()"发送回车，让服务器执行我的命令

将所有输入转发到 Java 进程

Forwarding all input to Java Process

java

inputstream

process